John f



J. F. PRYE.

VBNTILATOR.

Patented Aug.V 4, 1868.

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Lettere Patent No. 80,719, dated August 4, 1868.

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'IO'.ALL WHOM ITfMAY GONCERN:

Be it known'that I, JOHN F. FRY, ofLowell, in the county -of Middlesex, chnsetts, have invented a new and improved method oi' saving and conducting the through the chimney from any stove, furnace, or other heating-apparatus, the summer-scheen; and I do hereby declare that the following isn. full an being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my'inveution consists in the combination of a radiating chimney, metolliosnbstance, with a'n adjoining ain-box, chamber, oiheat-condhctor, in which the air, (admitted cold, or already 'warmed by other means,) is heated by the chimney, and conveyed to rooms 'above that in which the lire is built; said boi: orf-conductor' being completely-closed at the top, but by such valves, that it may easily be made an effectual ventilator .in the warm season.

heat .which generally passes o3 and Commonwealth of Massl and of Ventilating apartments during d exact description thereof, reference m-ade of castiron or other l It may be constructed as follows, to witz: Build a metallic chimney,` C, in any approved form, and at thesides thereof erect contiguous and parallel fines, ashot-nir conductors, H H, having registers R R, opening into.

each rooni through which the chimney passes; and a tube or box, B, for the admission of air below'the lower door', a movable valve, V, at a short distance below the external top, and fa. tight cover, T, just above the roof 'of the house, which cnn be removed in the warm season.4

' In order that this may work to the greatest advantage, the front ofthe chimney and of the heut-conductor Vshould becxposed, uncovered in the room through the whole height, and` may he bronz'ed or gilded in ornan mental style.

In the winter, or when a `lire is used,.the covers at the top, T and .V, are both closed, and the tubo B at the bottom is opened. l y' l In' the warm season, the valve is open at the top, -and the cover T is raised in nn inclined position, to turn the water from the ventilator, while it isopeu forthe escape of air. y a

What Il claim as my invention, and desire to secure by .LettersIntent, is-f The combination of a metallic chimney with Vnn adjoining haalt-conducting tube or box, in which the. air is heated by the chimney, and conveyed to rooms above the level of the lire, said tube or'box being-controlled by valves at both ends, so that it may be used as a. ventilator in the warm season. I

' JOHN' F. FRYE.

Witnesses;

'WILLIAM H. Lononmn, ALBY S.' SiIEPAnD. 

